APA (7th ed.) Citation

Davis, R. H. C. (1970). A history of medieval Europe: From Constantine to Saint Louis. Longman.

Chicago Style (17th ed.) Citation

Davis, R. H. C. A History of Medieval Europe: From Constantine to Saint Louis. London: Longman, 1970.

MLA (9th ed.) Citation

Davis, R. H. C. A History of Medieval Europe: From Constantine to Saint Louis. Longman, 1970.

Warning: These citations may not always be 100% accurate.